CN206957684U - A kind of roof fracturing system - Google Patents
A kind of roof fracturing system Download PDFInfo
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- CN206957684U CN206957684U CN201720686288.1U CN201720686288U CN206957684U CN 206957684 U CN206957684 U CN 206957684U CN 201720686288 U CN201720686288 U CN 201720686288U CN 206957684 U CN206957684 U CN 206957684U
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Abstract
Low-permeable under mine, high methane " three is soft " coal bed gas extraction technical field are the utility model is related to, discloses a kind of roof fracturing system, to solve the problems, such as the existing gas production difficulty in " three is soft " low-permeable high methane soft seam.Wherein, including water tank, fracturing pump and pressure duct, the delivery port of the water tank is connected by outlet pipe with the water inlet of the fracturing pump, the side of the fracturing pump connects a dynamical system, the delivery port of the fracturing pump is connected with one end of the pressure duct, and the other end of the pressure duct is located in the hydraulic fracturing drilling of roof.Hydraulic pressure is controlled by fracturing pump, realizes and hydraulic fracturing is carried out to " three is soft " low-permeable high methane soft seam top plate, realize that the release to coal seam is anti-reflection, the convenient extraction to gas, simple in construction, effect is good, improves gas production efficiency.
Description
Technical field
Low-permeable under mine, high methane " three is soft " coal bed gas extraction technical field are the utility model is related to, particularly
It is related to a kind of roof fracturing system.
Background technology
At present, the coal seam that China's overwhelming majority high methane and projecting mine are exploited belongs to hypotonic coal seam, poor air permeability, watt
This extraction is difficult, and efficiency is low, especially for containing " three is soft " coal seam, i.e., soft roof strata, soft main mining coal seam and soft coal
Layer floor strata, this Geological Structure in Coal Mine is complicated, occurrence condition is poor, and these situations are especially prominent, seriously constrains mine peace
Full production.
As a kind of hypotonic coal seam pressure relief and permeability improvement measure, hydraulic fracturing has that technique is simple, coverage is big, dangerous small
The advantages that, it is used widely in recent years.At present, hydraulic fracturing mainly uses layer-through drilling and concordant drilling two ways, this
Two kinds of forms of construction work require that hydraulic fracturing drilling and drainage holes are completely or partially arranged in coal seam, when anti-reflection target coal seam is
During this more soft coal seam of " three is soft " low-permeable high gas layer, due to low intensity, broken, drilling construction in coal seam
It is difficult and dangerous, even if the drilling that construction is good, is influenceed, in a short time by factors such as crustal stress, tectonic stress, digging stress
Phenomena such as caving in, being compacted occurs, so that gross distortion even damages coal bed drilling when performing follow-up unloading pressure means,
Other water under high pressure easily combines to form coal slime (slurry) with cherry coal in coal bed drilling and also results in collapse hole, in addition, water under high pressure acts on
It is easier to cause its plastic deformation when coal bed drilling surrounding soft coal body, coal body can be further compacted, and cause release anti-reflection
Scope very little, poor effect, even without effect.Therefore, waterpower pressure is implemented in " three is soft " low-permeable high methane soft seam
Split anti-reflection measure and often do not reach preferable effect, cause the waste of a large amount of human and material resources and financial resources.
Utility model content
(1) technical problems to be solved
The purpose of this utility model is to provide a kind of roof fracturing system, existing low to " three is soft " to solve
The problem of gas pumping difficulty in gas high methane soft seam.
(2) technical scheme
In order to solve the above-mentioned technical problem, a kind of roof fracturing system of the utility model offer, including water tank,
Fracturing pump and pressure duct, the delivery port of the water tank are connected by outlet pipe with the water inlet of the fracturing pump, the pressure break
The side of pump connects a dynamical system, and the delivery port of the fracturing pump is connected with one end of the pressure duct, the high-voltage tube
The other end on road is provided with the hydraulic fracturing drilling for being used to insert roof and inserts position.
Wherein, the water outlet of the fracturing pump is provided with a pressure gauge and stop valve.
Wherein, the water outlet of the fracturing pump is connected by reducer union with the pressure duct.
Wherein, the water inlet of the water tank is provided for connecting the connection position of the water pipe of the mine laneway.
Wherein, the fracturing system also includes the gas probe for being used to be arranged on the top of the mine laneway.
Wherein, the good extraction pipeline included for mash gas extraction of the fracturing system.
(3) beneficial effect
A kind of roof fracturing system provided by the utility model, high pressure fracture water is provided by fracturing pump, it is high
Pressure pipe road carries out hydraulic fracturing to " three is soft " low-permeable high methane soft seam top plate, realizes that the release to coal seam is anti-reflection, is pushing up
Gas " virtual reservoir " and crack passage are formed in slate body, the convenient extraction to gas, simple in construction, effect is good, improves
Gas production efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
In figure, 1：Roof；2：Coal seam；3：Hydraulic fracturing drills；4：Mine laneway；5：Water tank；6：Fracturing pump；7：Become
Drive connector；8：Pressure duct；9：Gas is popped one's head in；10：Water pipe；11：Outlet pipe；12：Dynamical system；13：Pressure gauge；14：Cut-off
Valve.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Example is used to illustrate the utility model, but is not limited to the scope of the utility model.
The utility model embodiment is for existing difficult to the gas production in " three is soft " low-permeable high methane soft seam
The problem of, there is provided a kind of roof fracturing system.
As shown in figure 1, a kind of roof fracturing system, the fracturing system is arranged in mine laneway 4
Outlet pipe 11 and the fracturing pump are passed through with construction, including water tank 5, fracturing pump 6 and pressure duct 8, the delivery port of the water tank 5
6 water inlet connection, the side of the fracturing pump 6 connect a dynamical system 12, delivery port and the high pressure of the fracturing pump 6
One end connection of pipeline 8, the other end of the pressure duct 8 are provided with the hydraulic fracturing drilling 3 for being used for inserting roof 1
Insert position.
Wherein, the utility model embodiment is excellent is applied to " three is soft " low-permeable high gas layer, fracturing system knot
Structure is simple, for being arranged in mine laneway 4, is easy to construct, and fracturing system includes water tank 5, fracturing pump 6 and pressure duct
8, the water inlet of water tank 5 is provided for connecting the connection position of the water pipe 10 of mine laneway 4, to provide sufficient frac water.
Further, the delivery port of water tank 5 is connected by outlet pipe 11 with the water inlet of fracturing pump 6, the side of fracturing pump 6
A dynamical system 12 is connected, frac water enters fracturing pump 6 out of water tank 5 in the presence of dynamical system 12, and then to frac water
Pressurization.
Further, the water outlet of fracturing pump 6 is provided with a pressure gauge 13 and stop valve 14, realizes strict monitoring fracturing pump
The pressure of frac water after 6 pressures, the end of the delivery port of fracturing pump 6 are connected by the arrival end of reducer union 7 and pressure duct 8
Connect.
Wherein, the port of export of pressure duct 8 is provided with the hydraulic fracturing drilling 3 for being used to insert roof 1 and inserts position,
Roof 1 is provided with multiple hydraulic fracturings drilling 3, and makes the shape of roof 1 to the injection frac water of hydraulic fracturing drilling 3 one by one
Into multiple cracks, realize that the release in coal seam 2 is anti-reflection.
Further, fracturing system also includes the multiple gas probe 9 for being arranged on the top of mine laneway 4, with prison
The concentration of gas in mine laneway 4, in addition to the extraction pipeline for mash gas extraction are controlled, ensures construction safety.
The operating method of the utility model embodiment is as follows：
Fracturing system is arranged in mine laneway, the water pipe of the connection position of water tank inlet and mine laneway is connected
Connect, the implantation site of pressure duct end is entered in the hydraulic fracturing drilling of roof；Turn on the power system, fracturing pump successively
With the switch of the water pipe of mine laneway, frac water pressurizes through fracturing pump, and it is in hydraulic fracturing drilling and right to be entered by pressure duct
Roof pressure break；After the completion of pressure break, fracturing system is closed, extraction pipeline is connected with pressure duct, carried out gas and take out
Adopt, in whole process, the concentration of gas in gas probe monitors mine laneway, improve the security of construction.
A kind of roof fracturing system provided by the utility model, high pressure fracture water is provided by fracturing pump, it is high
Pressure pipe road carries out hydraulic fracturing to " three is soft " low-permeable high methane soft seam top plate, realizes that the release to coal seam is anti-reflection, is pushing up
Gas " virtual reservoir " and crack passage are formed in slate body, the convenient extraction to gas, simple in construction, effect is good, improves
Gas production efficiency.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (6)
- A kind of 1. roof fracturing system, it is characterised in that the fracturing system be arranged on mine laneway in Construction, including water tank, fracturing pump and pressure duct, the delivery port of the water tank pass through outlet pipe and the water inlet of the fracturing pump Connection, the side of the fracturing pump connect a dynamical system, and one end of the delivery port of the fracturing pump and the pressure duct connects Connect, the other end of the pressure duct is provided with the hydraulic fracturing drilling for being used to insert roof and inserts position.
- 2. roof fracturing system as claimed in claim 1, it is characterised in that the water outlet of the fracturing pump is set There are a pressure gauge and stop valve.
- 3. roof fracturing system as claimed in claim 1, it is characterised in that the water outlet of the fracturing pump leads to Reducer union is crossed to connect with the pressure duct.
- 4. roof fracturing system as claimed in claim 1, it is characterised in that the water inlet of the water tank, which is set, to be used In the connection position for the water pipe for connecting the mine laneway.
- 5. the roof fracturing system as described in claim any one of 1-4, it is characterised in that the hydraulic fracturing system System also includes the gas probe for being used to be arranged on the top of the mine laneway.
- 6. the roof fracturing system as described in claim any one of 1-4, it is characterised in that the hydraulic fracturing system System also includes the extraction pipeline for mash gas extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720686288.1U CN206957684U (en) | 2017-06-13 | 2017-06-13 | A kind of roof fracturing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720686288.1U CN206957684U (en) | 2017-06-13 | 2017-06-13 | A kind of roof fracturing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206957684U true CN206957684U (en) | 2018-02-02 |
Family
ID=61379436
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720686288.1U Active CN206957684U (en) | 2017-06-13 | 2017-06-13 | A kind of roof fracturing system |
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| CN (1) | CN206957684U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083945A (en) * | 2017-06-13 | 2017-08-22 | 中铁十九局集团矿业投资有限公司 | A kind of roof fracturing system and its implementation |
| CN108361011A (en) * | 2018-03-08 | 2018-08-03 | 河南理工大学 | The method for controlling Affected areas by mining from underworkings orientation hydraulic fracturing |
| CN112377243A (en) * | 2020-11-26 | 2021-02-19 | 中铁十九局集团第二工程有限公司 | Outburst prevention construction method for coal and gas outburst tunnel |
| CN115596421A (en) * | 2022-11-30 | 2023-01-13 | 中国矿业大学（北京）（Cn） | Device and method for vibrating type hydraulic fracturing permeability-increasing coal body based on frequency monitoring |
-
2017
- 2017-06-13 CN CN201720686288.1U patent/CN206957684U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083945A (en) * | 2017-06-13 | 2017-08-22 | 中铁十九局集团矿业投资有限公司 | A kind of roof fracturing system and its implementation |
| CN108361011A (en) * | 2018-03-08 | 2018-08-03 | 河南理工大学 | The method for controlling Affected areas by mining from underworkings orientation hydraulic fracturing |
| CN112377243A (en) * | 2020-11-26 | 2021-02-19 | 中铁十九局集团第二工程有限公司 | Outburst prevention construction method for coal and gas outburst tunnel |
| CN115596421A (en) * | 2022-11-30 | 2023-01-13 | 中国矿业大学（北京）（Cn） | Device and method for vibrating type hydraulic fracturing permeability-increasing coal body based on frequency monitoring |
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